Observations from the map
The Honda map ranks 19 with 33 definitions; the largest module types are: transmission control unit (6), engine control unit (4), high-voltage battery module (3).
5 of the addresses use 11-bit CAN identifiers and 28 use 29-bit identifiers. 1 definitions have scan priority 1; priority decides which module a scan starts from.
Modules in the map
| Module name | Type | Address | Response | Priority |
|---|---|---|---|---|
| ECM/PCM (OBD-II) | Engine Control Unit | 7E0 | 7E8 | 1 |
| TCM (OBD-II) | Transmission Control Unit | 7E1 | 7E9 | 2 |
| VSA / ABS safety-critical | ABS / ESP Module | 18DA28F1 | 18DAF128 | 3 |
| SRS Airbag safety-critical | Airbag / SRS Module | 18DA53F1 | 18DAF153 | 4 |
| Combination Meter | Instrument Cluster | 18DA60F1 | 18DAF160 | 5 |
| CAN Gateway | Gateway Module | 18DAEFF1 | 18DAF1EF | 7 |
| Engine (PGM-FI) | Engine Control Unit | 18DA10F1 | 18DAF110 | 20 |
| Engine 2 (A/F, VTEC) | Engine Control Unit | 18DA11F1 | 18DAF111 | 21 |
| A/T Transmission | Transmission Control Unit | 18DA1EF1 | 18DAF11E | 22 |
| DCT-TDU (Drive Unit) | Transmission Control Unit | 18DA1CF1 | 18DAF11C | 23 |
| Shift-by-Wire | Transmission Control Unit | 18DA0BF1 | 18DAF10B | 24 |
| ESB (Electric Servo Brake) safety-critical | Brake Control Module | 18DA2AF1 | 18DAF12A | 25 |
| Electric Brake Booster safety-critical | Brake Control Module | 18DA2BF1 | 18DAF12B | 26 |
| EPS (Power Steering) | Steering Module | 18DA30F1 | 18DAF130 | 27 |
| HUD | Instrument Cluster | 18DA61F1 | 18DAF161 | 28 |
| TPMS | Tyre Pressure (TPMS) Module | 18DA26F1 | 18DAF126 | 29 |
| Forward Radar (ACC/CMBS) | Adaptive Cruise Control Module | 18DAB0F1 | 18DAF1B0 | 30 |
| Forward Camera | Camera Module | 18DAB5F1 | 18DAF1B5 | 31 |
| Camera (alt) | Camera Module | 18DAB3F1 | 18DAF1B3 | 32 |
| Adaptive Damper Control | Suspension Module | 18DA3AF1 | 18DAF13A | 33 |
| HV Battery (IPU) | High-Voltage Battery Module | 18DA01F1 | 18DAF101 | 34 |
| HV Motor | High-Voltage System Modules | 18DA02F1 | 18DAF102 | 35 |
| Battery Charger | Charger Module | 18DA15F1 | 18DAF115 | 36 |
| HV Battery Pack B | High-Voltage Battery Module | 18DA16F1 | 18DAF116 | 37 |
| Transmission (29-bit) | Transmission Control Unit | 18DA1DF1 | 18DAF11D | 38 |
| Module (29-bit) | — | 18DA0EF1 | 18DAF10E | 39 |
| Engine (Hybrid, 29-bit) | Engine Control Unit | 18DA33F1 | 18DAF133 | 40 |
| BECM / HV Battery (Ultium) | High-Voltage Battery Module | 7E4 | 7EC | 41 |
| PIM / Motor Control (Ultium) | High-Voltage System Modules | 7E6 | 7EE | 42 |
| Onboard Charger (Ultium) | Charger Module | 7E7 | 7EF | 43 |
| AT/CVT #2 (29-bit) | Transmission Control Unit | 18DA18F1 | 18DAF118 | 60 |
| FCV Fuel Cell (29-bit) | High-Voltage System Modules | 18DA07F1 | 18DAF107 | 61 |
| AWD/4WD (29-bit) | AWD / Transfer Case Module | 18DA25F1 | 18DAF125 | 62 |
See the modules in your vehicle
With an ELM327-based BLE OBD2 adapter, CarCoding scans the vehicle’s modules, reads fault codes from those it can reach and explains every code in plain language. Which modules are reachable depends on the make and on the vehicle. The app is free to download.
Some advanced features require an in-app purchase.
Data source: the CarCoding ECU scan map (ecuDatabase.ts). The addresses and names in the table are definitions from the map; they can differ depending on the hardware and software version in your vehicle.